Tractor disk harrow



June 17, 1924. 1,498,203

c. w. ROBINSON ET AL TRACTOR DI SK HARROW Original Filed Nov. 29 1920 2 Sheets-Sheet 1 ha/"Z65 1 80A! nyan June 17 7924.

C. W. ROBINSON ET AL TRAcTofi DISK HARROW Original Eiled Nov. 29. 1920 2 Shee1.sSheel 2 Patented June 17, 1924.

enemas w. nonmson AND JOSEPH I. MITCHELL, or AUBIIRN, new YORK, AS-

SIGNOR-S "r0 INTERnATmNAL HARVESTER QQ P NY; A' conPonAmow 10F m JERSEY.

TRACTOR DISK Application filed .;N 'overnber 29 ,;1320, ,Serial lio grj qw. Renewed Novembeq26 l9 2 3.

To all whom it mayconcem Be it lmown that WG,,QHAR14ES;W.;BOBIN SON and JOSEPH I. MITC L "citizens otthe United; States, and ;residents, respectively, of Auburn, in the county of Cayuga. and State of New York, and of Aubnrn, in the county of .Cayngaend stete of New York, have invented certain new and useful Improvements in Tractor Disk HarroWs, of'which the followingis a fullifclear,.end exect specification.

Our invention relates to tandem diskharrows of vthe type Wherecthe power of the draft fmeans; usually a tractor, is employed to actuate the Qgeng controlling "device's. @ur objects are to provident harro w in which thehgeng controlling mechanism is .greatly simplified and the mechanism for engling the gangs on the front s ction ismadeflto serve for the rearisectiones Well, andvin which the reersectionniay be readily detached and theiront section usedelone, if desired, and false to couple the front and rear sections 01' frames of the herr ow in a novel and simplifiedmanner.

W/e accomplish these objectsby empl oying a construction in which there ereitwog horizontally positioned ;,angula,r, frizimes, connected at their outer cendsby detecheble c0'u P g of novel yp nd by Provi in i dependent gang angling I devices oneeoh frame, one of which 'is controlledcby a .sl,iding. draft head adapted to ,be "connected to a tractor, theitwo angling evi e being connected by readily detachable: means including a. movable saddles shaped plate iwhich connects the gengs onthe' frontjfreme and moves with them.

-With these main objects in view onr invention consists ofthe organizationnndvdetails of construction, or. their equivalents, herein described and pertculerly defined in the claims. -Having reference tothedrewmgs c Fig. 1 is a plant-view, of thetandem relish harrow embodying ouninvention.

Fig. 2 isle centrelverticelsection on the line 2- 2, Fig. 1, with the gangsin. ipglcd position.

Fig.3 is a side elevation with the gangs straightened.

Fig. 4 is an enlarged detail viewoiithe saddle plate connecting the front gangs.

Fig. 5 is e vertical section on the line In the iptesenti tene Wo -h v il ust edrthe mprovem nt c s i utin Qm' mpie in cement, with (a tandem comprising i 'f'r'ont frame or section ,Aenda ree :fmn e Z- QQQQ JHB, e ch provided with th .u ue e14 ri et d fil eklgeii' The ne en h new fram ar n efe 'eb yfiem ne'ct d t w h f m yr in 'p v te' a 10 to links 11' Connected to the ,t'orivard angles of the franie et 12' The front frame ineludes a pair of longit-l ldinel1y extending p' ed e he WhiQhP J'QQ r elfd- 1y from: the ,freine properiand ih ztve a cross piece ,ll to their" enter ends to which i isecnre th brace ba '1 ,ivhiich a eo nected to the gangs in proximity to their pivot points. The forward ends'et fthe englejhars 13 else carry a shifteble h ad '16 whi h i j empo 59f a uppe netched plat w ve-1 aflow aple .5lQI nected' by bolts positioned in'fthe spage be e n h eng b r send. by iv ffiiee' le e s m m e 1 Pr vi ed wi se ie ge ape tnres itor attachmentof the drait coupling. The rear end-of plate 16 is bentidovvnwerdy t .n e rl e dependin p r io l6 which is epertnredfto; receive: the hooked; end 1730f rod17 WhiChlmS itspther iend piv te .t t dep n ins r firm th fram h lower en o hi 'if Q smi e ap 1 of nk .1 c ne ing: it ith th front gangs. vOn the rear ends-of the angle bars l -t er i m nte e eees-wnnecti membe m plii ns e 'ddle-s ee dip' t '2 vhich stretddles the aingl'e' bars and formed wit e emb d c re- :po tien' '20? in whi ar J' urnele l er .wh be On t upper face of the angle hers esche enen e cen r p t i ns g ee t e spa between them Q'The platejQO ztlso cerries the rollers {22 which ere jonrna led in vertical P t n 2 5 f th Pl teeitiene t engage the under'fecespfthe hers, as best e .i i Qnse vs d t1 eteiL2 i Prov ded l te a ee 2 w ic @lf P t w t th ensi ifr m ,It will be evident thet}; ith the structure bQ eee b direment bf th r r theed 16 in e torard direction' on angle bars 13 wi lcomm ne t ln vemenb th biu i e ,to the inneren'ds of the' gangsto drevv them into parallel ornon-worlgingposition when desired, and alsothatthe draft heed 16 mey be moved rearlwardly on the angle hers indecPende t-ly of o .whi .th1 ni 1 Sin t aperture in plate 16 and in this manner permits the angle of the gangs to be setby rearward movement of the draft head. The position at which the draft head is to be locked, and therefore the angle the gangs will assume on forward movement of the harrow, is determined by a latch 24 Which is mounted on plate 14 and engages the series of notches in plate 16*. It is also evident that as the front gangs are swung into and out of working position, the plate 20 will move'with them with a minimum of resista'nce,'owing to its rolling connection with the angle bars. i

' The rear angles of the front frame and the forward angles of the rear frame are connected by couplings which include rearwardly projectingbrackets'25 fixed to the front frame and provided with vertically extending apertures at their ends, andbrackets 26 fixed to the rear frame and formed with spaced arms provided with short slots 26*,

' the arms. being adapted to embrace the front brackets and to be slidably interlocked therewith by a coupling'pin 27'in'the slots and apertures of the respective brackets, this construction providing a draft connection between the front and rear harrow sections .7 sufliciently rigid to, cause proper tracking of the gangs while permitting a certain degree of flexibility between'the frames.

V The angling mechanism for the rear gangs comprises a lever 28 pivoted intermediate its ends at the center ofthe rear frame and having links 29 connected to its lower end which are in turn connected to the inner ends ofthe'rear gangs." The upperend of lever 28 is a forward y extending rod 30 pivoted thereto in one of a series of apertures and this rod has its forward end bent downwardly to selectively engage a series of apertures formed in the upper arm of a stapleshaped coupling member or clevis 31 which is secured to the arched portion of plate 20, thus'providing areadily detachable connection between the angling mechanisms for the front and rear gang as well as one afiording independent means for adjusting the angle of the rear gangs. lVith the gangs connected as above described, and the rearangling mechanism connected to plate 20 by rod 30, it will follow that forward movement of plate 20 will cause opposite movement of the rear gangs, causing the gangs on the two sections to be moved in opposite directions from the working to non-working position and vice versa.,' In operation the harrow is transported with the gangs and draft head positioned as seen in Fig. 1. When it is desired to throwthe gangs into working position the draft head 16 is moved rearwardly on bars 13 to the extent desired where it is retained by latch 24 and the harrow then pulled forgangs on each frame, a gang angling device mounted on the front frame and connected to the gangs thereon, a member pivotally connecting the inner ends of said gangs and movable back and forth therewith and angling means for the rear gangs comprising a lever pivotally mounted between its ends at a point behind said member and links connecting one end of said lever to said member and its other end to the rear gangs.

2. A disk harrow comprising front and rear connected frames, pivotally 'mounted gangs on each frame, a gang angling device shiftably mounted on the front frame and connected to the gangs thereon, a connecting member pivoted to the inner ends of said gangs and movable in a fore and aft direction therewith, a lever mounted on one of the frames and connected to the rear gangs and a link connected to one end of said lever and to the gang connecting member on the rear connected frames, pivotally mounted gangs on each frame, central longitudinally extending members on the front frame, a gang angling device shiftably mounted on the forward ends of the longitudinal members and connected to the gangs on the front frame, a gang connecting member pivoted to the inner ends of said gangs and mounted to move in a fore and aft direction on the rear ends of said'longitudinal members, a lever pivoted intermediate its ends on one of the frames, links connecting one end of said lever to the rear gangs and a link connected to theother end of said lever and having an adjustable connection with the gang con-- necting member on the front frame. 6

4. A disk harrow comprising front and rear connected frames, pivotally mounted gangs on each frame, central longitudinally extending members on the front frame comprising a pair of spaced angle bars, a gang angling device shiftably mounted on the forward ends of the bars and connected to the gangs on the front frames, a plate pivot ally connecting the inner ends of said gangs and provided withnrollers havingportions engaged in the space between said bars, angling means mounted on the rear frame and connected to the rear gangs, and an operating connection between the gang conextending members on the front frame comprising a pair of spaced angle bars, a gang angling device shiftably mounted on the forward ends of the angle bars and connected to the gcngs on the front frame, a saddle shaped plate straddling the angle bars and pivotally connected to the inner ends of the front gangs, rollers journaled in said plate for engagement with top and bottom faces of said angle bars, gang angling means mounted on the rear frame and connected to the rear gangs, and a link adjustably connecting the saddle-plate to the rear gang angling means. i

6. A disk harrow comprising front and rear horizontally positioned frames, gang angling mechanism on each frame, comple mental coupling brackets fixed to the outer ends of the front and rear frames, interlocking means connecting the brackets of the respective frames, and coupling means uniting the gang angling mechanisms of the front and rear frames.

7. A disk harrow comprising front and rear horizontally positioned angular frames, gang angling mechanism on each frame, rearwardly projecting coupling brackets fixed t0 the rear angles of the front frame and having their ends provided with apertures, coupling brackets fixed to the front angles of the rear frame and having slotted arms enbracing the ends of the front brackets, coupling pins passing through said apertures and slots for connecting the respective brackets and a link uniting the gang angling mechanisms on the front and rear frames.

8. A trailer section for a tandem disk harrow, comprising a horizontally positioned frame, gangs pivoted on the frame, forwardly extending coupling brackets fixed to the outer ends of the frame and formed with spaced apertured arms, a lever pivoted intermediate its ends on the frame, links connecting one end of the lever with the gangs and a coupling element connected to the opposite end of the lever and having means adapted for engagement with another harrow section.

9. A disk harrow comprising front and rear frames carrying disk gangs, coupling means between the frames comprising bracket members fixed to the outer portions of the front and rear frames respectively, and complemental interlocking parts on the ends of the brackets including means permitting one bracket member to have movement longitudinally of the other.

10. A disk harrow comprising front and rear frames carrying disk gangs, coupling means between the frames comprising bracket members fixed to the outer portions of the front and rear frames respectively, and interlocking elements on the ends of the brackets including openings in the brackets on one of the frames in which the ends of 10115; brackets on the other frame are slidably 1e (1.

11. In a harrow, front and rear frames, pivotally mounted disk gangs on each frame, means for shifting the front gangs to and from working angles, a lever pivoted intermediate its ends on one of the frames at a point between the front and rear gangs, a link connecting the upper end of said lever with the front gangs for movement therewith, a link between the lower end of said lever and the gangs on the rear frame, and

longitudinally slidable couplings between the frames.

In testimony whereof we affix our signatures, in the presence of two witnesses.

CHARLES W. ROBINSON, JOSEPH I. MITCHELL. Witnesses:

F. A. PRITCHARD, R. A. MARLAND. 

